Geoege boss



Applicationl filed August 2T, 18S3.` (No model.)

To LU whom, it' may cov/wenn.: A Be it known that I, GEoRGERoss, `of lIroy, county of Rensselaer, and State of New York, have invented certain new and useful Improvements in Air-Pumps, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked t ereon.

My invention has relation to that class of so as to insure freedom and accuracy of movement, compactness of structure, and ease of access to the valve and the ports for cleaning or repairing, andto provide an easy means of draining theWater-tank. To accomplish all of this, myimprovements involve certain novel parts, details of construction, and principles of operation, all o f which will be herein first Y fully described, and then pointed out in the claims,

In the accompanying drawings, forming part of this specification, Figure l is a sectional elevation of an apparatus constructed and arranged for operation in accordance with my invention and involving the principles thereof. Fig. Z'is a sectional elevation of the water-valve casing and contained valve upon a vertical plane at right angles to that of Fi 1. In both these figures like letters of reference, wherever they occur, indicate corresponding parts.

A is the main chamber or tank of the ap- B is the valve-casing for the water-governto said casing.

Eis a passage communicating with the tank, and serving to conduct water from the inlet to the tank While the latter is heilig filled, and -to conduct it back to the outlet or discharge port F .When the tank is being emptied of its contents. The inlet and outlet ports l) and F are preferably located so close 'together'that one `ing valve C, and D is the inlet or supply port valve, O, may be used to open and closethem alternately, ,thus avoiding the necessity of `using two valves for the purpose, and saving The 1n the power required to shift the valve. channels leading to the inlet and outlet ports,

lboth in the same casing and one located above and theother below the valve, make the pressure upon the valve practically equal upon both faces at all times, so that the valve is balanced, and thus more easy. to be shifted than would otherwise occur. i Upon the stem of the valve `the same being arranged so as to rise and fall with the water'in the tank. The buoyancy and the weight of this rloat are employed to shift the valve. 1 Upon the rod or pipe G are two stops or abutments, represented at a and b, one at top and one at bottom, against which the iioat strikes asit rises and falls.

To obviate this and to insure a positive shifting of the valve to its extreme limit in either -1 j Y direction by the rising and falling float, I employ a spring-latch so arranged that it will arrest the iioat at a point a little short of the eXtreme travel to` which it might otherwise attain, and hold it there until its weight or its buoyancy is sufficient to overcome the resistance of the latch as `well as the friction of the valve on its seat, and when this resistance is overcome, compel the float and the valve to complete the stroke by a sudden and complete movement. y

" The simplest form of latch which I have IOG been able to devise is that shown in the draw ings at c. It is governed by a light spring, d, which may be adjusted to any tension by a screw-plug, e. The opening in the casing of the latch may be packed against leakage of water in any suitable way. The latch enters the valve-casing at a point below the connection with the tank, and engages with the inclined faces of a boss or ledge, f, turned upon the valve-stem, as plainly shown. This oper ates as follows: When the water is receding from the tank, the float follows down upon thecentral pipe or rod until it reaches the stop b, where it is arrested, being held up by the latch. The water continues to iiow out until the weight of the float is sufficient to overcome the power of the latch when the valvestem is carried suddenly down. This movement will open the inlet4 and close the outlet ports. Water then flows into the tank and the iioat rises until it strikes the stop a, where it is held until the buoyant effort of the water thereon is sufcient to overcome the holding power of the latch, when the rod and the valve are carried suddenly upward, opening the outletand closing theinlet port, when the water flows out again, and the movements are so continued. This latch is very efficient for the purposes intended. Its form and arrangement may be variously modified and still ac-. complish the same results within the limits of my invention. I make the channel in the casing leading to the outlet port larger than that leading from the inlet, so that the tank may be discharged more rapidly than it is filled.

At I is an ordinary screw-cap, by unscrewing which the valve and stem may be withdrawn for cleaning or repairing. The valve may be packed or not, as may be desired. By withdrawing the valve and allowing water to rush throughthe casing the lattei'1 may be readily freed of sediment or other matters which may collect therein. As water flows out of the tank air is admitted through any ordinary check-valve, as at K. This valve is firmly closed as soon as the pressure on its under face is increased. As the water enters the tank it compresses the air therein andforces it out through an air-opening, as at L, from whence it may be conducted away for any useful pur pose. Acheck, M, at this opening prevents return of air therethrough as the water recedes. At the lower mouth of L is a floatvalve, N, arranged to close the air-escape passage as soon as it is seated upon the mouth thereof, so that in case of an overilling of the tank water could not find an escape through The top and bottom of the the air-conduit.

tank are to secure economy of water-space, re-

cessed as shown, for the accommodation of the iioat at its limits of travel; but this feature has no effect upon the workings of the other parts. The water-way at the bottom of the tank is located in a boss, O, within which is a channel communicating with the lowermost part of the tank, so that the tank may be thoroughly washed out whenever required. The watervalve casing is located entirely outside of the tank, so that it is readily accessible for adj ustment or repairs. Being so constructed and arranged, the improved apparatus is found in practice to admirably answer the purposes or objects of the invention, as previously set forth.

Having now fully described my invent-ion, what I claim as new, and desire to secure by Letters Patent, is-

1. In an air compressing apparatus, the detent or latch, combined with the float and valve, and arranged for holding the iioat until its weight or buoyancy is sufficient to overcome the resistance of the detent or latch, and to shift the valve, substantially as shown and described.

2. In an air compressingapparatus, the water-valve balanced in its l sing, said valve i having its stem extended directly into the tank, and operated by a float. substantially in the manner and for the purposes set forth.

3. -In combination with the valve-casing located outside of the tank, and having the valve and latch or detent therein as specified, the removable cap applied upon the bottom of the casing, the whole being arranged so as to permit withdrawal of the valve and washing of the casing, substantially as shown and described.

4. In an air compressing apparatus, the valve-case having the inlet and outlet channels and ports therein, one above the other, the balanced valve, the latch or detent and the screw-cap, combined and arranged substantially as shown and described.

5. In combination with the tank containing the float, the boss for attachment of the waterconduit leading to the valve-casing, said boss being provided with a channel leading from the lowermost point of the tank to facilitate cleaning,substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand in the presence of two witnesses.

GEORGE Ross.

Vit-nesses:

JOHN BUOKLER, WORTH Oseoon.

ICO

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